Decatur County, Indiana

Founding: 1822
Parent county: Unorganized territory

Namesake: Stephen Decatur, U.S. naval officer
Seat: Greensburg (1822–)

Land area: 373 square miles

Population (2020): 26,472

Population (historic): 5,887 (1830); 17,294 (1860); 19,779 (1880); 19,518 (1900); 17,308 (1930)

Periods of population growth: pre-1830–1880; 1890s; 1930–1980; 1990–2020

Subdivisions: One city; four towns; two CDPs; nine townships

Pre-1940 residences (estimated): 2,766 (24.4%)
Pre-1940 housing survival rate: 53.7%
Pre-1860 housing survival rate (1940): 9.4%

Farm housing in disrepair (1950): 9.6%

Nonfarm housing in disrepair (1950): 9.8%

Average farmhouse value (1930): $1,359
Average outbuilding value (1930): $1,397

Average farmhouse size (1940): 5.9 rooms
Number of farms (1920): 1,910
Average farm size (1920): 98.6 acres
Sources of settlement: Kentucky, Ohio, Germany, Pennsylvania, Virginia, and Ireland

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Greensburg

Namesake: Greensburg, Pennsylvania

Founding: 1822 (platting); 1823 (post office); 1837 (incorporation)

Population (2020): 12,312

Population (historic): 1,202 (1850); 3,198 (1880); 5,034 (1900); 5,702 (1930)

Periods of population growth: pre-1850–1910; 1920–2020
Pre-1940 residences (estimated): 1,126 (21.5%)

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